A galaxy is a large system of stars, gas, dust, and other celestial objects bound together by gravity. The Milky Way galaxy is the galaxy in which our solar system is located. There are billions of galaxies in the universe, each with its own unique characteristics and composition. Galaxies come in various shapes and sizes, including spiral, elliptical, and irregular. They can contain anywhere from millions to trillions of stars. Galaxies also play a significant role in the formation and evolution of the universe.
